﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;

namespace WpfApp1.Tools
{
    public class RelayCommand : ICommand
    {
        private readonly Action<object> _execute;
        private readonly Func<object, bool> _canExecute;

        public RelayCommand(Action<object> execute, Func<object, bool> canExecute = null)
        {
            _execute = execute ?? throw new ArgumentNullException(nameof(execute));
            _canExecute = canExecute;
        }

        public bool CanExecute(object parameter) => _canExecute?.Invoke(parameter) ?? true;
        public void Execute(object parameter) => _execute(parameter);

        public event EventHandler CanExecuteChanged
        {
            add => CommandManager.RequerySuggested += value;
            remove => CommandManager.RequerySuggested -= value;
        }
    }

    //public class RelayCommand : ICommand
    //{
    //    private readonly Action<object> _execute;
    //    private readonly Func<object, bool> _canExecute;

    //    public RelayCommand(Action<object> execute, Func<object, bool> canExecute = null)
    //    {
    //        _execute = execute ?? throw new ArgumentNullException(nameof(execute));
    //        _canExecute = canExecute;
    //    }

    //    public bool CanExecute(object parameter) => _canExecute?.Invoke(parameter) ?? true;
    //    public void Execute(object parameter) => _execute(parameter);

    //    public event EventHandler CanExecuteChanged
    //    {
    //        add => CommandManager.RequerySuggested += value;
    //        remove => CommandManager.RequerySuggested -= value;
    //    }
    //}


}
